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Short-Term Borrowings | 12 Months Ended
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Dec. 31, 2017
Short-term Debt [Abstract] |
Short-Term Borrowings | Short-Term Borrowings Short-term borrowings were as follows:
December 31 (In thousands) |  | 2017 |  | 2016
Securities sold under agreements to repurchase |  | $ | 183,289 |  |  | $ | 209,795 |
FHLB advances |  | 208,000 |  |  | 185,000 |
Total short-term borrowings |  | $ | 391,289 |  |  | $ | 394,795 |
The outstanding balances for all short-term borrowings as of December 31, 2017 and 2016 and the weighted-average interest rates as of and paid during each of the years then ended were as follows:
(In thousands) |  | Repurchase agreements |  | FHLB Advances
2017 |  |  |  |
Ending balance |  | $ | 183,289 |  |  | $ | 208,000 |
Highest month-end balance |  | 230,905 |  |  | 208,000 |
Average daily balance |  | 205,269 |  |  | 23,924 |
Weighted-average interest rate: |  |  |  |
As of year-end |  | 0.41 | % |  | 1.64 | %
Paid during the year |  | 0.35 | % |  | 1.16 | %
2016 |  |  |  |
Ending balance |  | $ | 209,795 |  |  | $ | 185,000 |
Highest month-end balance |  | 248,277 |  |  | 185,000 |
Average daily balance |  | 224,763 |  |  | 15,694 |
Weighted-average interest rate: |  |  |  |
As of year-end |  | 0.17 | % |  | 0.80 | %
Paid during the year |  | 0.16 | % |  | 0.63 | %
During 2016 and 2017, outstanding FHLB advances were collateralized by investment securities owned by the Corporation’s bank subsidiary (PNB) and by various loans pledged under a blanket agreement by the Corporation’s bank subsidiary. At both December 31, 2017 and 2016, $25 million of investment securities were pledged as collateral for FHLB advances. At December 31, 2017 and 2016, $1,789 million and $1,909 million, respectively, of commercial real estate and residential mortgage loans were pledged under a blanket agreement to the FHLB by Park’s bank subsidiary. See Note 12 - Repurchase Agreement Borrowings for information related to investment securities collateralizing repurchase agreements.

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- Definition The entire disclosure for short-term debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -URI http://asc.fasb.org/topic&trid=2208564 + Details
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